Product Details

Many of you will be familiar, or have heard of ACME screw threads. These are imperial thread profiles which allow you to transfer rotary power, without the worry of wearing out vee threads on standard screwed rods.

The trapezoidal thread profile is the metric equivalent to ACME power threads, and is available from IAS in 10, 12, 16, 20, 25, 32, 36 and 40mm screw diameters in right hand threads. We also stock 16, 20 and 25mm in left hand threads and can supply 50mm from our factory. This allows you to easily create a synchronous movement in two opposite directions with one centrally mounted motor and gearbox combination.

Save yourself on materials, machine time and labour, and thread cutting frustration on long lengths, by sourcing your trapezoidal screw shafting from IAS, cut to length, and ready for you to machine bearing journals on. Alternatively send IAS a drawing of your screw part requirement with bearing journal diameters and coupling connection details, and we will offer you a price. We can handle either one off jobs, or if you have an OEM requirement which you use on a regular basis, or have a one off high volume need (25 units+), we can present you with a machined component price, which is ready to assemble in your machine or manufacturing process.

The screw shafts are made from medium tensile 1045 steel, and are available in 3 metre lengths (12mm and under are 2m lengths), which IAS can cut to your required length. IAS stock round flange nuts to suit the trapezoidal screw shafts, and these are made from bronze alloy, and are available in right and left hand thread profiles, and save the hassle of machining internal power threads.

Other trapezoidal nut styles are available, and include plastic nuts for use in washdown applications. They are generally used with stainless steel 303 grade trapezoidal screws, which are available on an indent basis, with reasonably short lead times (size and weight dependant). Load ratings are reduced to 25% of a bronze alloy nut, when using plastic nuts.

Some technical details to think about when using trapezoidal screw products. They operate on a friction drive basis, and will require lubrication. The loads they can carry are quite high and range from 260Kgf for a 10mm flange nut to 3240Kgf for a 40mm flange nut.

If you are looking for an adjusting system or dirty work area application, or a general engineering application, trapezoidal screws provide a cost effective solution, and are competitively priced from IAS. Don't forget to allow for bearing journals when working out your overall screw length and IAS can also supply shaft supports and arrange shaft machining for a complete bolt down solution.

Please feel free to contact IAS with your trapezoidal screw requirements and we will look forward to working with you on your enquiry.